Hematology Practice Questions

Q: What is the first test to become positive in patients with Hemochromatosis?

Increased Transferrin Saturation. **Explanation:** In Hereditary Hemochromatosis (HH), the primary defect is a mutation in the **HFE gene**, leading to decreased **Hepcidin** levels. Low hepcidin causes unregulated iron absorption in the duodenum and excessive release of iron from macrophages. **1. Why Transferrin Saturation is the correct answer:** Transferrin saturation (TSAT) is calculated as (Serum Iron / Total Iron Binding Capacity) × 100. Because iron is being absorbed at an abnormally high rate and entering the plasma, the available transferrin molecules become saturated very early in the disease process, often before significant tissue damage or massive storage occurs. It is the **most sensitive screening test** and the first biochemical abnormality to appear. A TSAT >45% is highly suggestive of HH. **2. Why the other options are incorrect:** * **Serum Iron:** While serum iron increases, it is subject to significant daily fluctuations and is not as reliable or early an indicator as the saturation percentage. * **Serum Ferritin:** Ferritin reflects total body iron stores. While it is used to assess the severity of iron overload, it rises **after** transferrin saturation has already increased. It is also an acute-phase reactant, making it less specific. * **Liver Enzymes:** Elevation of ALT/AST occurs only after significant iron deposition leads to structural liver damage (cirrhosis/fibrosis). This is a late manifestation of the disease. **NEET-PG High-Yield Pearls:** * **Gold Standard Diagnosis:** Genetic testing for **C282Y mutation** of the HFE gene. * **Most Accurate Test for Iron Overload:** MRI (T2*) or Liver Biopsy (Perls' Prussian Blue stain). * **Classic Triad (Bronze Diabetes):** Cirrhosis, Diabetes Mellitus, and Skin Hyperpigmentation. * **Treatment of Choice:** Therapeutic Phlebotomy (Target Ferritin: 50–100 ng/mL).

Q: Which of the following conditions is treated with the ABVD chemotherapy regimen?

Hodgkin's disease. **Explanation:** The **ABVD regimen** is the gold standard first-line chemotherapy for **Hodgkin’s Lymphoma (HL)** [1]. It was developed to provide high cure rates while minimizing the long-term risks (such as secondary leukemia and infertility) associated with older regimens like MOPP. The regimen consists of: * **A:** **A**driamycin (Doxorubicin) – An anthracycline (Side effect: Cardiotoxicity). * **B:** **B**leomycin – A cytotoxic antibiotic (Side effect: Pulmonary fibrosis). * **V:** **V**inblastine – A microtubule inhibitor (Side effect: Bone marrow suppression). * **D:** **D**acarbazine – An alkylating agent (Side effect: Highly emetogenic). **Analysis of Incorrect Options:** * **Chronic Lymphocytic Leukemia (CLL):** Typically treated with targeted therapies like Ibrutinib or chemo-immunotherapy regimens such as **FCR** (Fludarabine, Cyclophosphamide, Rituximab) [2]. * **Acute Lymphoblastic Leukemia (ALL):** Requires a complex multi-phase protocol (Induction, Consolidation, Maintenance) involving drugs like Vincristine, Prednisolone, L-Asparaginase, and Daunorubicin. * **Non-Hodgkin’s Lymphoma (NHL):** The standard treatment for the most common subtype (DLBCL) is **R-CHOP** (Rituximab, Cyclophosphamide, Hydroxydaunorubicin, Oncovin/Vincristine, and Prednisolone) [2]. **High-Yield Clinical Pearls for NEET-PG:** * **Stanford V** and **BEACOPP** are other regimens used in advanced or refractory Hodgkin’s Disease. * **Brentuximab Vedotin** (anti-CD30 antibody-drug conjugate) is used in relapsed HL. * **Reed-Sternberg cells** (Owl-eye appearance) are the hallmark of Hodgkin’s Disease; they are typically **CD15+ and CD30+** [1]. * Monitoring: Patients on ABVD should undergo **Pulmonary Function Tests (PFTs)** for Bleomycin toxicity and **Echocardiography** for Doxorubicin cardiotoxicity.

Q: A 40-year-old man with a 10-year history of diabetes, currently on medication, presents with abdominal pain, weakness, lightheadedness, palpitations, and shortness of breath. On examination, he has glossitis, hyperpigmentation of the skin on the dorsum of his hands and feet, and abnormal hair pigmentation. His family reports increased irritability over the past year. Laboratory findings include Hb: 9 gm%, MCV: 110 fl, MCH: 36 Pg, MCHC: 34 gm/dl, Reticulocyte count: 0.1 x 10^9/L, LDH: 600 U/L, Indirect bilirubin: 1 mg/dL, S. iron: Normal, S. Ferritin: Normal, WBC: 2 x 10^9/L, and Platelet count: 90 x 10^9/L. Peripheral blood smear and bone marrow aspiration findings are also noted. Which of the following drugs is the patient most likely taking?

Metformin. The patient presents with classic features of **Megaloblastic Anemia** due to **Vitamin B12 (Cobalamin) deficiency**. **1. Why Metformin is the Correct Answer:** Metformin is a first-line oral hypoglycemic agent known to cause Vitamin B12 deficiency in up to 30% of patients, especially with long-term use (as seen in this 10-year history). It interferes with the **calcium-dependent absorption** of the B12-intrinsic factor complex in the terminal ileum. * **Clinical Clues:** Glossitis, hyperpigmentation (a high-yield dermatological finding in B12 deficiency), and neuropsychiatric symptoms (irritability). * **Laboratory Clues:** Macrocytic anemia (MCV 110 fl), pancytopenia (low WBC and Platelets), and markers of **ineffective erythropoiesis** (elevated LDH and indirect bilirubin due to intramedullary hemolysis) [1]. **2. Why Other Options are Incorrect:** * **Pioglitazone (Thiazolidinedione):** Primarily associated with fluid retention, weight gain, and heart failure exacerbation; it does not cause macrocytic anemia. * **Vildagliptin (DPP-4 Inhibitor):** Generally weight-neutral and does not affect B12 absorption or hematological parameters. * **Exenatide (GLP-1 Agonist):** Associated with gastrointestinal side effects and weight loss, but not specifically linked to B12 deficiency or pancytopenia. **3. NEET-PG High-Yield Pearls:** * **Hyperpigmentation:** While B12 deficiency is usually associated with pallor, skin hyperpigmentation (knuckles/dorsum of hands) is a characteristic board-exam finding. * **Ineffective Erythropoiesis:** High LDH + Low Reticulocyte Count + Macrocytosis = Think B12/Folate deficiency [1]. * **Metformin Monitoring:** ADA guidelines suggest periodic monitoring of B12 levels in metformin-treated patients, especially those with anemia or peripheral neuropathy.

Q: A patient presents with microcytic hypochromic anemia, Hb of 9 g/dL, serum iron of 20 µg/dL, ferritin level of 800 ng/mL, and transferrin saturation of 64%. What is the most likely diagnosis?

Atransferrinemia. **Explanation:** The clinical presentation of microcytic hypochromic anemia with paradoxical iron overload (high ferritin and high transferrin saturation) is the hallmark of **Atransferrinemia** (Congenital Hypotransferrinemia). **1. Why Atransferrinemia is correct:** In this rare autosomal recessive disorder, there is a deficiency of transferrin, the primary protein responsible for transporting iron to the bone marrow for erythropoiesis [1]. * **Anemia:** Without transferrin, iron cannot be delivered to developing RBCs, leading to iron-deficient erythropoiesis and **microcytic hypochromic anemia** [1]. * **Iron Overload:** Because iron is not being utilized by the marrow, it deposits in peripheral tissues (liver, heart, pancreas). This results in **very high serum ferritin** and **high transferrin saturation** (since the total iron-binding capacity is extremely low, even a small amount of iron saturates the available protein). **2. Why other options are incorrect:** * **Iron Deficiency Anemia:** Characterized by **low** ferritin and **low** transferrin saturation [2]. * **DMT1 Mutation:** While it causes microcytic anemia and systemic iron overload, the serum iron and transferrin saturation are typically normal or low because the defect lies in iron transport *into* the cell, not transport *in the plasma*. * **Sideroblastic Anemia:** While it shows high ferritin and saturation, the primary defect is in heme synthesis within the mitochondria (often showing ring sideroblasts). Atransferrinemia is a more specific fit for the combination of profound transferrin deficiency and systemic overload. **Clinical Pearls for NEET-PG:** * **Atransferrinemia** is a "Paradoxical Iron State": Tissue iron overload + Erythroid iron deficiency. * **Treatment:** Periodic infusions of plasma or purified transferrin. * **Differential for High Ferritin + Microcytic Anemia:** Sideroblastic anemia, Thalassemia, Lead poisoning, and Atransferrinemia [2].

Q: Which of the following findings is generally NOT seen in idiopathic thrombocytopenic purpura (ITP)?

Palpable splenomegaly. **Explanation:** **1. Why Palpable Splenomegaly is the Correct Answer:** In Idiopathic Thrombocytopenic Purpura (ITP), platelet destruction occurs via anti-platelet antibodies (IgG) in the reticuloendothelial system, primarily the spleen [1]. However, this process does not typically lead to splenic congestion or hyperplasia significant enough to cause organomegaly. **The presence of a palpable spleen in a patient with thrombocytopenia should prompt a search for alternative diagnoses**, such as leukemia, lymphoma, portal hypertension, or systemic lupus erythematosus (SLE) [3]. In ITP, the spleen is usually normal in size. **2. Analysis of Incorrect Options:** * **A. More common in females:** Chronic ITP is classically seen in young to middle-aged women (female-to-male ratio of approximately 3:1), making this a typical finding. * **B. Petechiae, ecchymosis, and bleeding:** These are the hallmark clinical manifestations of "mucocutaneous bleeding" caused by a low platelet count (thrombocytopenia) [2], [3]. * **D. Increased megakaryocytes in bone marrow:** Since ITP is a peripheral destruction disorder, the bone marrow responds by increasing platelet production. This results in a compensatory increase in the number and size of megakaryocytes. **3. Clinical Pearls for NEET-PG:** * **Diagnosis of Exclusion:** ITP is diagnosed only after ruling out other causes of thrombocytopenia [1]. * **First-line Treatment:** Corticosteroids (e.g., Prednisolone) or IVIG. * **Splenectomy:** Considered the most effective second-line treatment for chronic refractory ITP. * **Key Rule:** If a question mentions "massive splenomegaly" and "thrombocytopenia," think of Myelofibrosis or Malaria/Kala-azar, never ITP.

Q: A 23-year-old asymptomatic female presents with MCV of 70 fL, ferritin of 100 ng/mL, and Hb of 10 gm%. Which of the following is the most likely cause?

Thalassemia trait. ### Explanation The correct answer is **Thalassemia trait**. **1. Why Thalassemia Trait is Correct:** The patient presents with **microcytic anemia** (MCV 70 fL, Hb 10 gm%). The key to distinguishing the cause lies in the **ferritin level (100 ng/mL)**, which is well within the normal range (normal: 15–150 ng/mL). * In **Thalassemia trait**, there is a genetic defect in globin chain synthesis, leading to microcytosis. However, iron stores remain normal or even slightly elevated because the pathology is not iron deficiency. * A classic NEET-PG clue is an **asymptomatic** patient with a disproportionately low MCV relative to a mild anemia, often accompanied by a Mentzer Index (MCV/RBC count) < 13. **2. Why Other Options are Incorrect:** * **Iron Deficiency (B):** This is the most common cause of microcytic anemia, but it is characterized by **low ferritin** ( 100 fL)** (macrocytosis), contrary to the 70 fL seen here [1]. **3. NEET-PG High-Yield Pearls:** * **Mentzer Index:** MCV ÷ RBC count. If ** 13**, suspect Iron Deficiency Anemia (IDA). * **Gold Standard Diagnosis:** For β-Thalassemia trait, the investigation of choice is **Hb Electrophoresis/HPLC**, showing elevated **HbA2 (>3.5%)**. * **RDW (Red Cell Distribution Width):** Usually normal in Thalassemia trait (homogenous cell population) but increased in IDA (anisocytosis). * **Ferritin** is the most sensitive initial lab test for diagnosing Iron Deficiency Anemia.

Q: Which of the following indicates the worst prognosis in Chronic Lymphocytic Leukemia (CLL) patients?

Hemoglobin level less than 10 g/dL. The prognosis of Chronic Lymphocytic Leukemia (CLL) is primarily determined by the extent of bone marrow failure and the total tumor burden, as defined by the Rai and Binet staging systems [1]. **Why Option C is Correct:** A hemoglobin level of **<10 g/dL** (or a platelet count <100,000/mm³) signifies **Rai Stage IV** or **Binet Stage C**. This indicates advanced disease where the bone marrow is heavily infiltrated by leukemic lymphocytes, leading to hematopoietic failure [1]. This stage carries the worst prognosis, with a median survival of approximately 1.5 to 3.5 years [1]. **Analysis of Incorrect Options:** * **Options A & B:** Lymphadenopathy (Rai Stage I) and Hepatosplenomegaly (Rai Stage II) represent intermediate-risk disease. While they indicate a higher tumor burden than isolated lymphocytosis (Stage 0), they do not signify bone marrow failure and thus have a significantly better prognosis than anemia or thrombocytopenia [1]. * **Option D:** While a very high White Blood Cell (WBC) count reflects a high tumor burden, the absolute lymphocyte count itself is not a primary staging criterion for prognosis in the Rai or Binet systems. Patients can have very high counts for years without clinical deterioration. **High-Yield Clinical Pearls for NEET-PG:** * **Rai Staging:** Stage 0 (Lymphocytosis only), Stage I (Nodes), Stage II (Spleen/Liver), Stage III (Anemia), Stage IV (Thrombocytopenia). * **Poor Prognostic Markers:** 17p deletion (TP53 mutation), 11q deletion, ZAP-70 expression, and unmutated IGHV. * **Good Prognostic Marker:** 13q deletion (isolated). * **Richter Transformation:** Sudden clinical worsening or rapid lymph node growth in a CLL patient suggests transformation into Diffuse Large B-cell Lymphoma (DLBCL).

Question 1

What is the first test to become positive in patients with Hemochromatosis?

Accepted Answer

Increased Transferrin Saturation

Answer

Increased Serum Iron

Answer

Increased Serum Ferritin

Answer

Increased Liver Enzymes

Question 2

Which of the following conditions is treated with the ABVD chemotherapy regimen?

Accepted Answer

Hodgkin's disease

Answer

Chronic lymphocytic leukemia

Answer

Acute lymphoblastic leukemia

Answer

Non-Hodgkin's lymphoma

Question 3

Which of the following conditions is not characterized by palpable purpura?

Accepted Answer

Immune thrombocytopenic purpura (ITP)

Answer

Henoch-Schonlein purpura (HSP)

Answer

Scurvy

Answer

Mixed cryoglobulinemia

Question 4

A patient presents with abundant spherocytes in the peripheral blood and a positive family history of anemia and splenectomy. All of the following statements regarding his condition are true, except:

Accepted Answer

The most common mode of inheritance is autosomal recessive.

Answer

Coombs test should be done to exclude an immunological cause.

Answer

Cholecystectomy may be required in the future.

Answer

Splenectomy may be required.

Question 5

A 40-year-old man with a 10-year history of diabetes, currently on medication, presents with abdominal pain, weakness, lightheadedness, palpitations, and shortness of breath. On examination, he has glossitis, hyperpigmentation of the skin on the dorsum of his hands and feet, and abnormal hair pigmentation. His family reports increased irritability over the past year. Laboratory findings include Hb: 9 gm%, MCV: 110 fl, MCH: 36 Pg, MCHC: 34 gm/dl, Reticulocyte count: 0.1 x 10^9/L, LDH: 600 U/L, Indirect bilirubin: 1 mg/dL, S. iron: Normal, S. Ferritin: Normal, WBC: 2 x 10^9/L, and Platelet count: 90 x 10^9/L. Peripheral blood smear and bone marrow aspiration findings are also noted. Which of the following drugs is the patient most likely taking?

Accepted Answer

Metformin

Answer

Pioglitazone

Answer

Vildagliptin

Answer

Exenatide

Question 6

Splenomegaly and reticulocytosis are typically absent in which type of anaemia?

Accepted Answer

Aplastic anaemia

Answer

G-6 PD deficiency anaemia

Answer

Myeloblastic anaemia

Answer

Iron deficiency anaemia

Question 7

A patient presents with microcytic hypochromic anemia, Hb of 9 g/dL, serum iron of 20 µg/dL, ferritin level of 800 ng/mL, and transferrin saturation of 64%. What is the most likely diagnosis?

Accepted Answer

Atransferrinemia

Answer

Iron deficiency anemia

Answer

DMT1 mutation

Answer

Sideroblastic anemia

Question 8

Which of the following findings is generally NOT seen in idiopathic thrombocytopenic purpura (ITP)?

Accepted Answer

Palpable splenomegaly

Answer

More common in females

Answer

Petechiae, ecchymosis, and bleeding

Answer

Increased megakaryocytes in bone marrow

Question 9

A 23-year-old asymptomatic female presents with MCV of 70 fL, ferritin of 100 ng/mL, and Hb of 10 gm%. Which of the following is the most likely cause?

Accepted Answer

Thalassemia trait

Answer

Vitamin B12 deficiency

Answer

Iron deficiency

Answer

Folate deficiency

Question 10

Which of the following indicates the worst prognosis in Chronic Lymphocytic Leukemia (CLL) patients?

Accepted Answer

Hemoglobin level less than 10 g/dL

Answer

Presence of lymphadenopathy

Answer

Presence of hepatosplenomegaly

Answer

WBC count exceeding 1,00,000 cells/mL

Hematology — MCQs

Hematology — MCQs

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